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2015 Dodge Challenger SRT Hellcat has 707 glorious horsepower [w/video]

Hold onto your butts. "600-plus horsepower" is what we were told to expect from the 2015 Dodge Challenger SRT with its 6.2-liter supercharged Hellcat V8 engine. But as we've just learned, those were incredibly conservative numbers. Dodge has officially announced that the range-topping Challenger will hit the asphalt with 707 - seven hundred and seven - horsepower, making it the "most powerful muscle car ever."
Of course, 707 hp is only part of the story, as the Hellcat has also been confirmed to produce 650 pound-feet of torque. All that power will run exclusively to the rear wheels through an eight-speed automatic transmission that differs from other Challengers. The new gearbox, 8HP90 (rather than the 8HP70) is "upgraded to handle the extra power and torque," says Dan Reid, SRT's manager of product design and motorsports.
We certainly hope you're prepared to spend a ton of money replacing tires.

Fiat Chrysler's next-generation Uconnect is faster, built on Android

If you're a regular reader of Autoblog, you know that for a long time we've liked Fiat Chrysler's Uconnect infotainment system for its bright, clear, responsive touchscreen interface. Now, according to the company, it will be better than ever with Uconnect 5, the latest iteration of the system. It has upgraded hardware and a revamped graphic user interface (the stuff on the screen). Looking at sample screens shown above, there are characteristics shared with the old system, such as the time, status and shortcuts at the top and the menu icons at the bottom. In the middle, the major change is the addition of home screens that can be customized with favorite menus and readouts that are always available. Each of these home screens can have up to four functions and you can have five pages to flip through. The graphics themselves feature more legible fonts and updated icons. Each car brand will get its own set of icons, colors and textures to help create unique experiences. And while each Fiat Chrysler product will be able to have Uconnect, including Alfa Romeo that has until now lacked Uconnect, each brand has the ability to make small tweaks including the screen orientation. The system will support displays in landscape, portrait or square, so different brands may choose different shapes. Powering Uconnect 5 is a processor Fiat Chrysler says is six times more powerful than what's in current systems. It features 6 gigabytes of RAM and 64 gigabytes of internal storage. The processor also supports screens as large as 12.3 inches with as many as 15 million pixels, or nearly twice that of a 4K resolution TV. The system can display information on up to four screens, too. Uconnect 5's firmware is built on Google's Android operating system, joining a few other automakers in using Android as a base for their infotainment systems. Uconnect 5 brings with it a number of new features. It brings full Alexa integration, so you can use it just like you do at home, provided you have a data plan for the car. Apple CarPlay and Android Auto continue to be standard, but now they can be used wirelessly. You can also now connect two phones via Bluetooth wirelessly so you can access content from both. Navigation gets real time information and updates from TomTom. Users can create five profiles with unique climate, radio and instrument settings, plus one for a valet.

Watch these Dodge Demons explode on a Texas drag strip

The Dodge Challenger SRT Demon is extremely quick. It can hit 60 mph from a dead stop in less time than it takes to read this sentence thanks to its supercharged 6.2-liter V8. That engine makes up to 840 horsepower and 770 pound-feet of torque, depending on what octane is running through the fuel lines. That's a ton of power going solely to the rear wheels. So much so that Dodge developed a number of features and a new set of tires specifically for the car. In our time with the Demon, the car took abuse run after run on a drag strip without skipping a beat, but it seems some actual owners aren't quite so lucky. Just take a look at what happened to a few of these cars. You can see the whole car shake and jitter right as the whole rear explodes in front of the tree. It seems the initial shock from the launch — the most taxing bit of any drag run — is what kills the differentials. Catastrophic failure is rarely pretty, but it is neat to see the whole thing occur in slow motion. Three more cars — four stock and one modified in total — suffered similar fates. Not a great look for Dodge or SRT. According to The Drive, a private drag event in Texas drew a number of Demon owners all trying to beat NHRA NHRA Top Fuel racer Leah Pritchett's time in her personal Dodge Demon — 42 stock Demons attended along with five modified cars. While no one managed to match her 9.65-second quarter-mile run, a few owners did dip below 10 seconds. Now, there are a few of caveats we must address. First, with any modified car, you run the risk of breaking something, even with a car that's set up from stock specifically for drag strips. Even a set of tires like the Mickey Thompsons shown in the video above can have an effect on driveline components. Horsepower may be king, but it's torque that's the rear killer. All that torque sends a shock through the car. Adding even more with aftermarket parts increases the risk of something failing. The modified car was apparently pushing out about 1,000 horsepower. That said, four of the five vehicles were stock, so any extra power or torque should theoretically be a non-factor. The drag strip's surface was maintained by a company called Mass Traction. FCA used Mass Traction during the Demon's development, so that too should be a non-factor in the part's failure. It's unclear what exactly caused the failures, though The Drive reports that FCA officials are investigating the matter. Related Video: This content is hosted by a third party.